Clayton, California Zoning Map
Zoning, overlays and hazards on every parcel — and an answer to what the code actually lets you build. Compiled from current zoning data for all 10 districts.
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What's in the Clayton dataset
Every field below is available for any Clayton parcel, on the map and through the AI.
Zoning
- District code & full name
- Parcel boundary & APN
- All 10 districts mapped
Building controls
- Maximum building height
- Floor area ratio (FAR)
- Front setback
- Side setback
Overlays, hazards & AI
- Flood hazard & environmental layers
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- Powered by live parcel data
Where uses are permitted in Clayton
Share of Clayton's zoned land where each use is permitted.
- Single-family
- 31.09%
- Retail
- 95.97%
- Eating & drinking
- 0.65%
- Office
- 0.65%
- Storage & warehouses
- 0.88%
Clayton, California Zoning Districts: What Do They Mean?
Zoning districts are areas regulated by specific laws that determine land use, building types, and development rules. Each district below shows its zone type and which uses it permits.
| Zone Code | Category | Area | Details |
|---|---|---|---|
A Agricultural | - | 75.1 ac | Standards & uses → |
L-C Limited Commercial | - | 15.6 ac | Standards & uses → |
PD Planned Development | - | 1,531.4 ac | Standards & uses → |
PF Public Facility | - | 21.1 ac | Standards & uses → |
Showing 4 of 10 districts
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What should developers know about Clayton zoning?
Clayton is a small, master-planned Contra Costa County community at the base of Mount Diablo, and its zoning tells that story in just ten districts. The map is overwhelmingly governed by a single Planned Development (PD) district of roughly 1,531 acres - the largest by a wide margin - which means much of the city's residential fabric was entitled through negotiated, project-specific plans rather than conventional by-right zoning. The remaining residential land is a ladder of single-family districts keyed to minimum lot size - R-10, R-12, R-15, R-20, and R-40 - with R-12 (about 284 acres) and R-10 (about 271 acres) the most extensive, plus an R-40-H variant that explicitly allows horses on larger estate lots.
The practical read for developers is that Clayton is a low-density, residential, semi-rural community with very little commercial or industrial land. Non-residential zoning is limited to a small Limited Commercial (L-C) district of roughly 16 acres, a Public Facility (PF) district, and an Agricultural (A) district near 75 acres. There is no industrial designation and no dedicated multifamily base zone in the data, so density and mixed-use ambitions would run through the Planned Development process. Building controls cover the full range - FAR, lot, density, coverage, height, lot width, and front, side, and rear setbacks - which on the larger R-20, R-40, and R-40-H lots favor estate-scale single-family homes. Hillside proximity to Mount Diablo and the dominance of PD entitlement both point to discretionary, design-sensitive review. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
Clayton zoning: frequently asked questions
Why is so much of Clayton zoned Planned Development?
The Planned Development (PD) district covers roughly 1,531 acres, far more than any other zone, because Clayton's neighborhoods were largely built as master-planned communities with project-specific standards. In PD areas the allowable density, layout, and design come from the adopted development plan rather than a fixed by-right code, so any change or new project there is a discretionary, negotiated process - confirm the governing plan with the city.
Can I build multifamily housing in Clayton?
The base-zone map is single-family - R-10 through R-40 districts keyed to minimum lot size - with no dedicated multifamily designation listed. A multifamily program would most likely have to proceed through the dominant Planned Development framework or rely on state housing law, so engage the planning department early to understand the available path before underwriting density.
What do the R-40 and R-40-H districts signal about the housing here?
R-40 is a large-lot single-family district, and R-40-H is the same with horses expressly allowed, which marks Clayton's semi-rural, estate-scale character at the city's edges. Buyers targeting these areas should expect big lots, equestrian-friendly uses in R-40-H, and design standards suited to a low-density, hillside-adjacent setting rather than compact subdivision product.
How much commercial opportunity exists in Clayton?
Very little. Commercial land is confined to a Limited Commercial (L-C) district of roughly 16 acres, with a small Public Facility (PF) zone and an Agricultural (A) district rounding out the non-residential map. There is no industrial zoning, so Clayton functions as a bedroom community - retail and service opportunities are scarce and concentrated.
Does the lot-size ladder (R-10 to R-40) affect how I underwrite a single-family site?
Yes. The numeric R districts correspond to progressively larger minimum lots, with R-10 and R-12 the most common and R-20 through R-40 reserved for larger parcels. Combined with full setback, coverage, and lot-width controls, that ladder caps unit yield per acre, so confirm a target's specific R designation before assuming subdivision potential.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Clayton planning department before acquisition or design.